Laying-out fixture and drilling jig



Jan. 25, 1927. 1,615,668

l. A. P. ANDERSON LAYING QUT FIXTURE AND DRILLING JIG Filed June 5, 1924 2 Sheets-Sheet l y 8a JM Jan. 25 1927.

A. P. ANDERSON LAYING OUT FIXTURE AND DRILLING JIG Filed June 5, 1924 2 Sheets-Sheet 2 Patented Jan; 25, 1927. I

ing out device for determining di .UNITED' V STATES IVEB A. ANDERSON, OF BRIDGEPORT, CONNECTICUT.

nanna-pur rixfrtneny .AND DRILLING .mal

Application lled J'une` 5,

My invention relates to a plotting and layerent positions on a given surface, and also a drilling jig to facilitate drilling holes in these ositions after they have been determined. It

- has for an object to providea device of this character which will be simple in construction and will be so constructed and arranged that any desired position within the limits ofthe device may be quickly, easily and ,ac-

curately determined. It is especially adapt-ll` ed as alayinof out fixturev for tool makers.

With the foregoing and otherr objects in view, I have devised the construction illustrated in the accompanying drawings'forming a part of this specification, similar reference characters being employedy throughout the various figures to indicate corresponding elements. In these drawings,l

Fig. .1 is a top plan viewof the device. Fig. 2 yis ,a side elevation lookingr from i the bottom of Fig. 1, portions being broken away tomore clearly show the construction. Fig. 3 is an end view looking from the riht' of Fig. 1. u

ig'. 4 is a transverse section through the i locatmg vhead substantially on line 4 4 of and the base.

Fig: 1.' v

4ig. 5 is a top plan view of a portion of the locating head showing a different posi- 'tion of the marker.

' Fig. 6 is a side elevation thereof looking from the right of Fig, 5.

Fig. 7 is a'det-ail transverse section substantlally 0n line 7--7 of Fig.- 1.

Fig. 8 is anend view of the marker securing means, and v Fig. 9 is a side elevation thereof.

,The device comprises a base 10 Vcounter- 40 bored on its upper side, as shown at 11,l to receive a rotatable work su porting table 12, the counterbore being pre erably of such a depth that the top of the table will be flush with the top of the base, as shown in Fig. 2.` A central opening 13 is provided through the table and base carrying a bushing 14 about which the table rotates.

surface for the rim of the table leavin a clearance 16 between the bottom 'of the t-a le This gives a' rigid su port for the table without interfering wits; its read rotation in the base. The table is provlded with any suitable number of drilled l openings 17 extending downwardly from the top surface thereof to receive suitable sup- There is provided ai guides 28- and 29 secured to the base b narrow shelf 15 forming a nished bearingsuitable means, such as screws 30.

.19124. serial no. 718,171.

porting pins 184 and securing'pins 19 and 20 for the work which is indicated in the drawing as'a rectangular block 21. The openings 17` preferably do not pass entirely through the table so that chips from the work cannot pass to the under side of the table. The

supporting cpins 18 are preferably provided wit tapere heads, as shown, t"o support the work a short distance above the vtop surface of the table. The ins 19 are provided to be engaged by two sides of the `block while the pins, 2O are preferably hexagonal in cross section and located on the other two sides of the work. They carry screws 22 arranged' to 'engage at their ends on the sides of the work and clamp it against the pins 19. The

screws 22 are inclined'somewhat so that whenl tightened they will press the work against the 'supporting pins 18. The rotatable table is provided with means for securing it in di erent angular positions about its' axis of rota-tio A simple and effective means for doing t is is to provide a series of openings 23'in the pins having ends adapted to fit the openings 23 to hold the table in adjusted positions. Coacting scales 26 and 27 may also be provided on the table and the vbase to indicate the angular-position of the table. If it is found that a half degree adjustment is. sufcient, the periphery may be provided with 360 openings 23, these openings being spaced one degree apart and then the pin 24 would hold the table in positions one'deg`ree apart. If the pin 25 is located a different number ofdegrees from the pin 24 plus one-half a degree then in 25 will hold the table inv positions half) which it may be held by the pin 24. By suitablyrlocating additional pins adjustments as fine as desired may be secured for the table.

-Located above the table and base at op osite sides of the base and extending parailel therewithand with each other is a pair of any L ese :guides are preferably substantially U-shaped, as shown,'to leave a clearance space under the guide proper to' facilitate use ofthe device. The guide 28 has a slot 31 along the top thereof leading to a rectangular guideway 32 -in which is slidably mounted al nut 33 threaded on an adjusting screw 34. This rscrew is mounted to rotate in suitable bearway between the positions in eriphery of the table and mount suitable plus 24 and 25 inthe base, these,

ings and 36 secured to the enils of the guide, the ends of the screw being rednced to lit these bearings, as shown at 37. These reduced ends form shoulders which engage the bearing plates 36 and 37 to retain thescrew against longitudinal movement. To one end of the. screw is secured a knurled head 38 for rotating the screw, and this head has a disc 39 provided with a scale cooperating with a scale on the bearing plate 35 to indi-l cate different positions of the screw. l

Extendin between the guides 28 and- 29, and mounte to slide therein, is a support 40 having a transverse head 41 guided by the main guide 28 and at its other end being seated m the guideway 42. A clamping screw 43 provided with almurled head T44 is carried by the head 41 of the support and is threaded into the nut 33. By loosening' 20 this screw and rotating the screw 34 the support 40 may be adjusted along the guides 28 and 29 above the work supporting table and in a plane parallel therewith. Suitable scales 45 may be rovided on the guide 28 2l to indicate the posltions of the support, and

the scale on the disc 39 will indicate fractional adjustments which could not be easily read on the scale 45. To facilitate easy reading of the scale the head 41 is provided with 80 a straight edge 46 closely adjacent this scale.

A guiding lug 47 extends downwardly from the support 40 to engage the inner side of guide 28, and on the opposite side of the head 41 is secured a plate 48 having a rib 35 49 on its lower edge seated in a groove in the other side of the guide. This rib prevents the support lifting off from the guide, and the large bearing surface always retains the support 40 at right angles to the guides 28 and 29. The plate 48 is secured to the head 41 by any suitable means, as screws 50. To facilitate insertion of the threaded end of the clamp screw 43 in the nut 33 the thread ed opening in the nut is counterbored a short distance from the top thereof, as shown at 5l.

Means is also preferably provided for clam ing the opposite end of the support 40 in a justed positions. For this purpose a clampingscrew 52 projects through a slot 53 in the guide 29 and is threaded into the end of the support, as shown at 54. The screw is provided with a knurled head to facilitate clampin of the screw.

Mounted to sli e on the support 40 is a locating head 55, and this head is so mounted on the support that it is slidable longitudinally thereof. As the support is located at right angles to the direction of its movement on the guides 28 and 29 the movement of the head 55 will be at right angles to a direction of movement of "the support and in a plane parallel to the plane of the work threaded on an adjusting screw 59. This screw is similar to the adjusting screw 34 for the support 40. It is reduced at its opposite ends, as shown at 60, to extend through bearings in yt-he plates 61 and 62 secured to the ends of the support. These reduced ends form' shoulders engaging these plates to prevent longitudinal movement of the screw. At one end of the screw is a knurled head 63 for rotating the screw having a disc 64 provided with a scale G5 cooperating with a scale on the plate 61 to indicate angular positions of the screw. To cooperate with the scale 66 on the top of the support 40 to indicate the positions of the locating head on thissupport this head is provided with a trapsverse straight edge 67 passing over this sca e.

The head 55 rests on the top of the support 40, as shown in Fig. 4. It also engages one side thereof and is 'provided with a transverse rib 68 seating in a groove 'at the lower side of the support. This will prevent the head lifting from the support. At the opposite side of the support a plate 69 is secured`to the 4head by suitable ,screws 70 and forms a guide on the other side of the support. A clamping screw 71 passes through the head and is threaded into the nut 58. This screw has a lmurled head 72, and the threaded opening inl the nut is counterbored at 73 to facilitate the entrance of the end of lthe screw into the nut. After the head has ,been adjustedalong the support 40 by means of the screw 59 it may be secured in adjusted positions b v tightening the screw 71.,

The head 55 is provided with a laterally extending portion 74 carrying the locating means and guide bushings for drills when the dcviceis used as adrilling jig. In the present instance the lateral extension 74 is provided with two openings 75 extending vertically or at right angles to the plane of the work supporting table, and these openings arc adapted to receive suitable hardened bushings 76 for guiding a drill or a center punch 77. Bushings of different internal diameters may be provided for use for different size drills.' The ordinary center punch 77 having a conical end 78 may be used if desired, but. in order to make the device more accurate I have provided an improved marker 79. This marker is an ordinary center punch one-half of which has been removed leaving`a flat 80, or in other words the marker is semi-cylindrical. It will be apparent that as the flat. 8O extends through the axis the point will always be inthe plane of this fiat so that if the flat is mounted either parallel to the direction of movement of the locating head 55 on the support 40, or parallel with the movement supporting table. At the upper side of the ynf the support 40v on the guides 28 and 29,

guide 40 is a slot 56 leading to a rectangular i guide way 57 in which is mounted a nut .3S

the line made on the surface of the work by this point will always pass through the ceulill ter of the opening carrying this marker,`

the location of, which center is accurately f that no matter how carelessly this marker yfio -plane 'of the ,flat.

is ground the point will always be `in the I have provided means for easily and quickly locating this flat in a plane parallel with either the direction of movement ofthe locating head on the supj/ port` 4() or at right angles to this direction and thus parallel to the direction of movement of the support 40 on the guides 28 and 29. Forthis//purpose I provide a holder 81 also` semi-cylindrical and of a size to fill the other half of the opening through which the marker 79 extends, and with the Hat side 82 of the holder engaging the flat on the marker, as 'shown in Figs. 5 and (5. A suitable pin83 is carried by the end of the holder and is adapted to extend into either of Ytwo drilled openings 84 in the head 55. These openings are located ninety degrees apart and in such positions with respect to thepin 83 that when the pin 83'is in one of these openings the fiat 80 is parallely to the direction of movement of the lo;ating head on the support 40, and `when the pin is in the other opening the flat is at Vright angles thereto.y

In making the devicethe openings 75 are accurately located with respect t'o the 4center of ,the table when the straight edges 46 and .67 are on certain lines of their respective scales@ It will then be apparentthat by rotating adjusting screw 34 the positions of these openings may be adjusted in a direction parallel to the-guides 28 and 29,-and the support 40 ma be secured in the adjusted position by tig itening the screws 43 and The opening may then be adjusted `at i'iglit angles to the first adjustment by rotating adjusting screw 59, and the head secured in adjusted position byineans of the clamping screw 71. The position of the opening 75 or the amount of movement from a determined position is indicated by the Various scales, and the center of the'opening desired to be drilled is accurately determined. If it is desired to draw straight lines on the surface of the work the end of the marker 75 may be drawn along the work in either direction by means of the adjusting screws, or the clamping screws 43 and 71 may be removed when the locating head 55 may be easily slid along its support 40, or the support 4() may be slid along its supporting` guides 28 and 29.

By removing the holding pins 24 and 25 4the table carrying,r the work may be adjusted to any angular position desired, and if dur- '.ing the location of the table the marker is -niounted in the'openingv75 any desired arc may be inscribed on the surface of the work. finounted Thus by the combination of the three adj ustments provided any desired point maybe y easily and the work.

Having thus set ,i forth the nature of my! invention, what I claim is:

1. In a device ofthe character described, a base, a work supporting table rotatably mounted on said base, means for securing the table in different angular positions, a 1oeating head, means for mounting thelocating head coiiipi'ising supports parallel with the plane of the table and 'extending-at right angles to each otherthe head being adjustably mounted on 'one of the supports and said head support being adjust-ably mounted on the other support so that the head may be moved in a plane parallel with the table and in lines in this plane at right angles to each other, and means for securingthe head iny adjusted positions in both lines of adjustment.

2. In a device, of the character described,

a base, a wokfsupporting table rotatably mounted on the ba-.se, alocating head, a support above the table on which the head is adjiistably mounted forv movement in one direction, supports on which .said first support is mounted for movement at right angles to thev direction 'ot' movement ofthe head on its'support, means for securing the table in different angular positions, and means for securing thehead and its support lin adjusted positions.

3. 1n a device ot' the character described,

'a base, a workisupporting table rotatably mounted on the base. means` for securing the table in diii'ei'ent angular positions,-parallel guides above the base at opposite sides there-` of, a support extending between said guides and a-t right :ingles thereto and mounted for adjustment longitudinally of said guides, a locating head slidably mounted on .said support, and meansI for lsecuring thc support .and the head in adjusted positions.

4. In a device of the character described, :i base, a work supporting table rotatably mounted on the base, means for securing the table in dii'l'ei-ent angular positions. parallel guides above the base at opposite sides there of, a support extending between said guides and at right angles thereto and mounted for adjustii'ient' longitudinally of saidv guides. a screw carried by one ot' said guides and having threaded engagement with said lsupport, means foi' rotating the screw to adjust the support on the guides, a locating head slidably mou'nted on the support, a screw carried by the support and having threaded en gagement with said head, and means for rotatiig said latter screw to adjust the head on the support. f

In a device of the character described a base,

al work supporting table rotatably on the base, means for securing the table 1n different angular positions, said quickly located on the surface of table and base being provided With cooperating scales, work securing means on said table, parallel guides above the base at opposite sides thereof, a support extending between said guides and at right angles thereto and lmounted for longitudinal adjustment ot said dicating scales, a screw carriedby the snpport and having threaded engagement with the head, and means :t'or rotating the latter screw to adjust the head on the support, said screw and support being provided with co*- operating indicating scales.

6. In a device ofthe character. described, a base, a wor-l supporting table rotatably mounted on the base, means for securing said table in adjusting positions, said base and table being provided with cooperating indieating scales, a locating head, supporting means for said head above the table comprising supports parallel with the plane ot the table and extending at right angles to each other, the head being adj ustably mount- Acd on one oflthe supports and the head supcounterlaire, with its 'top surface substan-y tially flush with the top of the base and resting adjacent its peripheryV on the bottom ot the counterhore, work securing means car ried by said table, means for securing said table in adjusted positions, there being cooperating scales carried by the base and table to indicate the position ot the table, and a locating head mounted above the table to move in a plane parallel therewith.

S. In a device ot' the eharacter'described, a basc,'\vork securing lneans Carried by the base, a locating head, means for .mounting said head for movement in a plane parallel vvith the base and in lines in said plane at right angles to each other, a semi-cylindrical pointed marker carried by said head in a position normal to the base, and means cooperating with the flat side ot' said marker tor semiring said marker in positions with its flat side parallel with either ol said lines ot' movement of the head.

9. In a device of the character described,

.a locating head` means for mounting the head so that it may be moved'in directions at right angles to each other` a semi-cylindrical pointed marker carried by said head, and means cooperatingwith the fiat side ot said marker for securing sai'd marker in positions with its flat. side parallel with either of said directions oi movement.

lt). In a device ot the character described, a movably mounted locating head having a cylindrical opening, a semi-cylindrical pointed marker mounted in said opening, a semi-cylindrieal holder in the other hall: of said opening vv ith its tlat side engaging that ot the marker, and cooperating pin and socket means carried by the head and holder arranged to secure said holder in positions ninety degrees apart about the axis of Said opening.

l1. In a device ot the character described, a base, a work supporting table rotatably mounted on the base, said table being provided with a series of openings spaced apart a distance corresponding to one or more dcgrees, said base being provided with a pair of openings in the planes of the openings in the table and spaced from each other a dis tance corresponding to a given number of degrees plus a fraction of a degree,I and a pin for inserting in aligned openings to secure the table in adjusted angular positions.

In testimony whereof I affix my signature.

IVER A P. ANDERSON. 

